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HAV Review - IOSH South Wales PowerPoint Presentation

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Description : Check out this medical presentation on Orthopaedics, which is titled "HAV Review – IOSH South Wales", to know about Hand Arm Vibration Syndrome.

Tags : Orthopaedics, HAVS, Hand Arm Vibration Syndrome

Published on : Aug 10, 2021 | Views : 2180 | Downloads : 0

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Slide 1-

HAV Review – IOSH South Wales Jim Maccall
Slide 2-

Session Plan HAVS Basics Health Focus Controls / Assessment PPE Common Pitfalls Health Surveillance
Slide 3-

What is HAVS? “I know it like the back of my hand” Complicated bits of kit!
Slide 4-

What is HAVS? HAVS – Hand Arm Vibration Syndrome includes more than one condition including: Vibration White Finger Carpal Tunnel Syndrome
Slide 5-

Vibration White Finger (VWF) Symptoms – Permanent loss of feeling in their fingers Blanching of finger Long-term damage can lead to Gangrene
Slide 6-

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Slide 7-

Carpal Tunnel Syndrome
Slide 8-

Scale of issue? 1997 to 1998 Survey – 288,000 sufferers Approx. 500 new cases diagnosed per annum 11% of cases are women High risk activities were extraction i.e. mining Current high risk industries?
Slide 9-

HSE Health Focus UK Fatality rate – 2017 25 work at height deaths 31 struck by moving vehicle
Slide 10-

HSE Health Focus UK Fatality rate – 2017 – fatalities per 100,000 workers
Slide 11-

HSE Health Focus Construction 10,000 - premature deaths linked to construction dust 1,000 – mental well-being – Suicide 2,300 per 100,000 workers with Musculoskeletal Disorders 75% of civil claims are for noise induced hearing loss
Slide 12-

Managing the Risk Risk Assessing is simply done: Look at the whole job How many workers What kit is being used Get reliable vibration data Add K = Uncertainty if using manufacturers data Measure trigger time
Slide 13-

Getting Reliable Data http://www.thetooladvisor.com/
Slide 14-

Typical Vibration Values and Trigger Times values in m/s2 (Metres Per Second Squared)
Slide 15-

Exposure Action Value EAV If employees are exposed to vibration above this value then action must be taken to reduce exposure EAV is 2.5m/s2 A(8) or 100 Exposure Points A(8) = average over 8 working hours Actions are based on your Risk Assessment
Slide 16-

Exposure Limit Value ELV Employees must not be exposed to vibration above this value ELV is 5m/s2 A(8) or 400 Exposure Points A(8) = average over 8 working hours Lots of equipment and operations are likely to expose workers to a vibration dose above and beyond the Limit Value
Slide 17-

Measuring Trigger Time You could use: A best guess! A stop watch - operated by 2nd person A timer linked to the power source A timer activated by vibration that also monitors points e.g. The HAVi A vibration management system e.g. HAVMETER from Reactec
Slide 18-

Retrofitted to any tool Vibration magnitude Trigger time HSE points Flashing Light Heavy Duty Operated remotely Colour coded So how does HAVi work on site?
Slide 19-

Personal Protective Equipment Can PPE help? Can Anti Vibration gloves help? 6.3 to 200 Hz Gloves??
Slide 20-

Common Pitfalls Putting it in a box Estimating trigger time Doubling the m/s2 provided by the manufacturer
Slide 21-

Maths Manufacturer declared magnitude of 5.4 m/s2 Equation time! HSE Vibration Points per hour Points = n(1 hour) = 2 x (ahv)2 In other words: (magnitude x magnitude) x 2 k – Uncertainty 2.7 m/s2
Slide 22-

Maths (5.4 x 5.4) x 2 = 58.32 Points per hour K = 2.7 add this to the declared value = (8.1 x 8.1) x 2 = 131.22 points per hour! So adding the K allows for the worst case and still doubles the manufacturers value
Slide 23-

Common Pitfalls Putting it in a box Estimating trigger time Doubling the m/s2 provided by the manufacturer Using 5m/s2A(8) / 400 vibration points as a target rather than a limit Poor health surveillance / work history questionnaires Ignoring 10% of women and 5% of men who may have Raynauds Primary!
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Health Surveillance
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Conclusion Remember HAVS has no cure but its progress can be halted Its now easier to prevent than ever Job risk assessment should aim to keep exposure below 100 points per person Legal limit is 400 points in 1 shift – for emergencies! HAVi is a simple essential piece of PPE HAVi offer consultancy, 1 day IOSH HAV ME and short duration courses for supervisors and operatives
Slide 26-

Self-Promotion Warning
Slide 27-

Training for Hire have moved to the Trainers Arms